[Tex/LaTex] Inserting a picture in an equation

equationsgraphicspositioning

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Can I insert an image into an equation?

Is there any method to insert a picture in an equation? I am trying to write an equation where one of the elements of the equation is a small image. I need to obtain a pattern like this:

2 * image1 + 3 * image2 = image3 (equation number)

Please note, one simple way is to make a figure and put all of these elements in it and use \includegraphics to load it into LaTeX document as a figure, however, I need to have an equation with the above structure, not a figure.

Best Answer

You can use \includegraphics in math mode.

\begin{equation}
2*\includegraphics{image1} + 3*\includegraphics{image2} = \includegraphics{image3}
\end{equatioon}

Related Solutions

[Tex/LaTex] \twopagepicture package refining

The reason has to do with an oversize image. As LaTeX cannot fit it on a page it will float to the end. These type of figures are best to insert them manually. You will need to define a different environment for this. Try modifying the \twopagepicture by copying it a renaming it and just comment out the begin{figure} and \end{figure}.

\newcommand*{\twopagepicture}[4]{% copy twopagepicture an comment out
    .....
 %   \begin{figure}[#1]
    ....                
 %    \end{figure}%
 %   \begin{figure}[#1]
    .....     
 %   \end{figure}%
   ......
}

This ensures that the images will be shown exactly where placed.

To have a correctly placed two page spread firstly, one needs a method to clear to an even page, normally I would code it as follows:

\usepackage[strict]{changepage}
\makeatletter
\newcommand{\cleartoevenpage}{%
  \clearpage%
  \ifoddpage\c@page\hbox{}\clearpage\fi}

The second issue to take into consideration, is that the image width is always larger than the \textwidth dimension and hence any scaling must be done on the \textheight. This is important, otherwise you will get a new page.

enter image description here

The even page image is simply placed normally but issuing a \cleartoevenpage before the placement and a \newpage after it, producing the image shown above.

\cleartoevenpage
\includegraphics[height=0.95\textheight]{petra}
\newpage

The odd page image, will have to be shifted to the left by \textwidth.

 \hspace*{-\textwidth}\includegraphics[height=0.95\textheight]{petra}\hspace{1em}

enter image description here

The caption can be placed using a parbox or a minipage. In this case I have used a parbox. If your captions will have more than a paragraph of text, then use a minipage. Depending on the amount of text you have it may look better if you shift it slightly up or down. This can be done either using a vspace command or use a rule (I prefer the latter as I can have a visual clue and only zero the width at the final copy).

  \parbox[b]{0.25\textwidth}{\lipsum*[1-2]\par\rule{1pt}{50pt}}

You can see the rule in the last image below.

enter image description here

Full MWE

\documentclass{book}
\usepackage[left=0pt,right=0pt,top=0.5in,bottom=0.5in]{geometry}
\usepackage{graphicx,lipsum,caption,crop}
\usepackage[strict]{changepage}
\makeatletter
\newcommand{\cleartoevenpage}{%
  \clearpage%
  \ifoddpage\c@page\hbox{}\clearpage\fi}
\begin{document}
First page

\cleartoevenpage
\includegraphics[height=0.95\textheight]{petra}
\newpage
\hspace*{-\textwidth}\includegraphics[height=0.95\textheight]{petra}\hspace{1em}
\parbox[b]{0.25\textwidth}{\lipsum*[1-2]\par\rule{1pt}{50pt}}
\end{document}

Hope this helps.

[Tex/LaTex] LaTeX + Sketch: Workflow—Can It Be Simpler

I today started to use the combination of lualatex+tikz+sketch, the latter the newest addition. I unpacked sketch.exe to the same directory as my MikTeX binaries as the path has been setup and I will use it in general only with LaTex.

My first attempt at a workflow is by using the following:

\RequirePackage{filecontents}      
% Save the sketch as test-sk.sk 
\begin{filecontents*}{test-sk.sk}% from the sketch manual p13
def n_cyl_segs 20 def n_views 5 def I [1,0,0]
def endopts [fillcolor=lightgray]
repeat { n_views, rotate(180/n_views, [I]) then translate([I] * 2.1) }
sweep[endopts]{ n_cyl_segs<>, rotate(360/n_cyl_segs, [0,1,0]) }
line[fillcolor=white](1,-1)(1,1)

global { language tikz } 
\end{filecontents*}% the last statement was not clear, but it is required.

\immediate\write18{sketch  test-sk.sk -o sk-test.tex } %process the sketch

\documentclass{standalone}

\usepackage{tikz}

\begin{document}

\input{sk-test.tex}

\end{document}

This renders the same sketch as in manual.

Hope this is of help.

Best Answer

Related Solutions

[Tex/LaTex] \twopagepicture package refining

[Tex/LaTex] LaTeX + Sketch: Workflow—Can It Be Simpler

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